Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Some birds are known as honey guides because they may be followed by humans to
wild beehives. When the humans take honey from the hives, the birds are able to feast on the honey
and bees, too. This type of relationship can best be described as ____.
a. | parasitism | c. | mutualism | b. | commensalism | d. | symbiosis |
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2.
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Cougars are predators that often eat weakened or diseased animals. This is a
description of the ____ of cougars.
a. | habitat | c. | niche | b. | community | d. | none of these |
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3.
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Which of the following information could be included in the description of a
grasshopper’s niche, but not in a description of its habitat?
a. | continent where it lives | c. | plant species it
eats | b. | locations where it shelters | d. | temperatures it experiences |
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4.
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Organisms with overlapping niches probably have which type of
relationship?
a. | commensal | c. | mutualistic | b. | competitive | d. | parasitic |
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5.
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What is “soil type” to an earthworm?
a. | abiotic factor | c. | biotic factor | b. | biome | d. | carbon source |
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6.
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A researcher is studying reproduction in Taraxacum officinale, the
dandelion. She decides to measure only soil temperature. You think her study is
poorly-designed. Why?
a. | biotic factors probably play a large role in dandelion
reproduction | b. | dandelions are not affected by soil temperature | c. | it is hard to
measure soil temperature accurately | d. | soil temperature varies too
much |
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7.
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How long are food chains?
a. | four steps long | c. | it varies with day length | b. | three steps
long | d. | it varies with
ecosystem |
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8.
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Which of the following would be the easiest way to diagram predatory and
parasitic relationships between several species?
a. | biomass pyramid | c. | food web | b. | food chain | d. | numbers pyramid |
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9.
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Which process describes nitrogen fixation?
a. | animals eat plants containing nitrogen and return it to the soil through
urination | b. | bacteria take nitrogen from the air and convert it to a form usable by
plants | c. | organisms die and are decomposed into ammonia in the soil | d. | plants take nitrogen
from the air and store it in their roots |
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10.
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Your favorite plant is growing very slowly, and you would like to find some way
to increase its growth rate. Which of the following should you try increasing first?
a. | nitrogen | c. | sodium | b. | oxygen | d. | calcium |
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11.
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Which biogeochemical cycle is least dependent on biotic processes?
a. | carbon | c. | phosphorus | b. | nitrogen | d. | water |
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12.
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Which of the following allows the flow of energy through an ecosystem to
happen?
a. | abiotic factors | c. | evaporation | b. | cycling of nutrients | d. | predation |
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13.
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Which location would most likely hold autotrophs that derive their energy from
chemical compounds?
a. | swamp sediments | c. | grassland soil surface | b. | antarctic
pools | d. | desert
rocks |
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14.
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One of the nutrient cycles moves from an atmospheric gaseous form to the soil
through both abiotic and biotic processes, moves through the food web, then is returned to the soil
or to the atmosphere. Which cycle fits this description?
a. | carbon | c. | phosphorus | b. | nitrogen | d. | water |
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